The Cybiko was a Russian hand-held computer introduced in May 2000 by David Yang's company and designed for teens, featuring its own two-way radio text messaging system. It has over 430 "official" freeware games and applications. Because of the text messaging system, it features a QWERTY Keyboard that was used with a stylus. An MP3 player add-on was made for the unit as well as a SmartMedia card reader. The company stopped manufacturing the units after two product versions and only a few years on the market. However, because of the unique radio messaging hardware there is still a hobbyist community using Cybiko. Cybikos can communicate with each other up to a maximum range of 300 metres (0.19 miles). Several Cybikos can chat with each other in a wireless chatroom.
There are two models of the Classic Cybiko. The obvious difference is that version 1 has a switch on the side; version two uses the 'ESC' key for power management. The not-so-obvious differences between the two are the internal memory changes and the location of the firmware.
The CPU is a Hitachi H8S/2241 at 11.0592 MHz and it also has an Atmel AT90S2313 co-processor at 4 MHz to provide some support for RF communications. It came with 512 KB ROM flash memory and 256 KB RAM. It came with an add-on slot in the back.
The Cybiko Classic came in five colors: blue, purple (very common), neon green (or yellow, as some say), white (the last two are common but less so than blue and purple), and the ultra-rare black Cybiko, which, unlike the others, had a yellow keypad instead of white.
The add-on slot has the same physical appearance (pin-count, spacing) as PC card, but it is not compatible.